“I think the key thing about this idea is that it's not an idea at all it's a validated market which was first validated with the tweet by Peter levels I saw and then by sales I got from my Reddit post”

Build for Proven Demand by Targeting a Shutting-Down Giant's Market

Dennis explains why Yaphone succeeded where his previous projects failed. The market for international calling was proven by Skype's decades of users, and the shutdown created immediate, urgent demand. He saw idea validation twice — first from Peter Levels' tweet, then from first-minute sales on Reddit.